Wps-pqr Gmaw Lti

WELDING PROCEDURE SPECIFICATION WPS Company Name

By

LOPEZ TORRES INDUSTRIAL S.A.

Welding Procedure Speification No.

Revision No.

Date

1-1-GMAW

15/01/2014

Supp. PQR No.

Date

0

1-1-GMAW

Welding Process(es)

GTAW / SMAW

MANUAL

Type(s)

JOINTS (QW-402)

Details

Joint Design

GROOVE OR FILLET

Root Spacing

1/16" - 3/16"

Backing

Yes

Backing Material X  Me  Metal

Stalin Nuela

SEE FABRICATION DRAWINGS OR

No

X  Base Metal

X  Weld metal

Nonfusing Metal

Retainers

REPAIR SKETCHES

Nonmetallic

NOT USED

BASE METALS (QW-403) 1 P - No. G r ou p N o .

to

1

P - No.

1

Group No.

1

OR

to

-----

Spec. and type / grade or UNS No.

Spec. and type / grade or UNS No.

----

Chem. Analysis & Mech. Properties

----

OR

to

-----

Chem. Analysis & Mech. Properties

Thickness Range: Base Metal

Groove:

Maximum Pass Thickness

Min=

0.1875"

 1/4" (6 mm)

≤

Max=

X

1"

Yes

Fillet

All Thickness

No

Other  FILLER METALS (QW-404) Specification No. SFA  AWS Classification Classification No. No. F - No.  A - No. Size of Filler Metals Filler Metal Product Form Supplemental Filler Metal Weld metal Thickness Range Groove Fillet Electrode Flux Class

Flux Type Flux Trade Name Consumable Insert Other

PROCESS 1 = 5.20 E71T-1C 6 1 1.2 mm SOLID ----------

GMAW

1" Max. All fillet sizes -----None -----None Only with filler

PROCESS 2 =

WPS No. POSITIONS (QW-405)

GMAW

All

Welding progression

X ↑ ↔ OH ↓ All

Position(s) of fillet

Temperature range

None

Time range

None

Other  

None

GAS (QW-408)

None

Other

0

POSTWELD HEAT TREATMENT (QW-407)

0

Position(s) of groove

REV. No.

1-1-GMAW

PREHEAT (QW-406)

Percent composition

Preheat temperature, minimum

50°F

Interpass temperature maximum

Any

Mixture

Flow rate

CO2

Pure

25-40CFH

Not Required

Trailing

NONE

----

----

250°F for T > 0.750"

Backing Other 

NONE

-----

----

NONE

-----

----

Preheat maintenance Other, Preheat temperature Minimum

Shielding

Gas(es)

ELECTRICAL CHARACTERISTICS (QW-409) Filler Metal

Current

Wire

Energy

type

Feed

or 

Weld pass(es) Process Cla ssif ication

All

GMAW E71T-1C

Pulsing current

and

 Amps.

Speed

power 

Volts

speed

Diiameter 

polarity

(range)

(range)

(range)

(range)

(range)

1.2 mm

DCEP

140-320

-----

-----

22-35

Any

Not used

Max. heat input

TECHNIQUE (QW-410) String or Weave bead Orifice, nozzle, or gas cup

PROCESS 1 =

GMAW

BOTH 3/8" - 3/4"

Initial Cleaning

GRINDING AND BRUSHING

Interpass cleaning

GRINDING AND BRUSHING

Method of back gouging Oscillation

GRINDING ------

Contact tube to work distance

15 - 25 mm

Multiple or single pass per side

BOTH

Electrode spacing Peening Other 

ANY SMAW

NONE

Other 

SINGLE ----NOT ALLOWED OUT OF CHAMBER THERMAL PROCESS: ANY

None

ANY

GLOBULAR / SPRAY TRANSFER

Mode of Metal transfer for GMAW (FCAW)

Other  

GMAW

N.A.

Tungsten Electrode Size and Type

Multiple or single electrodes

Travel

PROCESS 2 =